Alert archive / Florida / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Jacksonville, FL

August 22, 2008Duval County, Florida

NWS Jacksonville, FL issued this flash flood warning at Aug 22, 2008, 10:28 AM EDT for Duval County, Florida. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 22, 2008, 10:28 AM EDT (14:28 UTC)
Expired: Aug 22, 2008, 1:30 PM EDT
In force: 3 hr
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 28 km from the middle of the area, began a volume at 14:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Aug 22, 10:55 AM EDT	FLOOD	Jacksonville Heights, FL	PUBLIC REPORTED 6 INCHES OF WATER INTO GARAGE OF HOME AT 6314 105TH STREET NEAR BLANDING BLVD.
Aug 22, 10:55 AM EDT	FLOOD	Riverside, FL	PUBLIC REPORTED INTERSECTION OF PARK STREET AND CHALLEN AVENUE IS COMPLETELY FLOODED.
Aug 22, 12:00 PM EDT	FLASH FLOOD	Nw Downtown Jacksonvill, FL	FLASH FLOODING OCCURRED ALONG MONCRIEF CREEK WITH ONE OF THE MOST SIGNIFICANT RISES IN WATER EXPERIENCED ALONG THE CREEK. AT 209 PM EDT THE SUMMER BROOK HEALTH CARE CENTER AT 5377 MONCRIEF ROAD WAS EVACUATED WITH WATER SURROUNDING THE FACILITY. DURING THE FLOO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 92 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 2.5 hours before the alert went out and 30 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 921 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS52 KJAX 221428
FFWJAX
FLC031-221730-
/O.NEW.KJAX.FF.W.0002.080822T1428Z-080822T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1028 AM EDT FRI AUG 22 2008

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL DUVAL COUNTY IN NORTHEAST FLORIDA

* UNTIL 130 PM EDT

* AT 1027 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED VERY HEAVY RAIN FROM TROPICAL STORM FAY RAINBANDS OVER   
  THE WARNED AREA WITH RAINFALL AMOUNTS OF 2 TO 4 INCHES EXPECTED    
  THROUGH NOON.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN
  MARCO...RIVERSIDE...NORMANDY...DOWNTOWN JACKSONVILLE AND MANDARIN.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

DUE TO LOCALLY HEAVY RAINFALL...FLASH FLOODING IS EITHER OCCURRING...
OR EXPECTED TO RAPIDLY OCCUR...ALONG MONCRIEF CREEK...MCCOYS CREEK...
AND HOGANS CREEK IN NORTHWESTERN JACKSONVILLE.

ALONG MONCRIEF CREEK...SIGNIFICANT FLOODING CAN BE EXPECTED IN THE
AREA OF LEONARD CIRCLE WEST FROM WEST 26TH STREET TO WEST 33RD STREET
AND THEN ALONG THE CREEK FROM WEST 33RD STREET TO NEAR GOLFBROOK
DRIVE. THE BRIDGE AT WEST 33RD STREET MAY BE IMPASSIBLE DUE TO
FLOWING WATER. FLOODING IS ALSO POSSIBLE NEAR MONCRIEF ROAD AT AND
NEAR WHERE THE MONCRIEF CREEK CROSSES THE ROADWAY.

ALONG MCCOYS CREEK...SIGNIFICANT FLOODING CAN BE EXPECTED FROM NEAR
INTERSTATE 10 NORTHWARD THROUGH HOLLYBROOK PARK TO THE INTERSECTION
OF MCCOY CREEK BOULEVARD AND FITZGERALD STREET. FROM THAT
INTERSECTION THE FLOODING WILL MOVE EAST ALONG MCCOY CREEK BOULEVARD
TO INTERSTATE 95 AND THIS INCLUDES THE BRIDGES CROSSING THE CREEK AT
KINGS AND STOCKTON STREETS. WATER ALONG MCCOY CREEK BOULEVARD MAY BE
THREE TO FOUR FEET DEEP WITH A SWIFT CURRENT. DO NOT TRY TO DRIVE
ALONG MCCOY CREEK BOULEVARD OR CROSS THE CREEK AT KINGS AND STOCKTON
STREETS.

ALONG HOGANS CREEK...SIGNIFICANT FLOODING CAN BE EXPECTED NEAR SHANDS
MEDICAL CENTER...AND CONFEDERATE...HENRY J KLUTHO...AND JEFFERSON
STREET PARKS. THIS INCLUDES BRIDGE CROSSINGS...WALKWAYS...AND LOCAL
BUSINESSES. WATER MAY BE SEVERAL FEET DEEP WITH A SWIFT CURRENT. DO
NOT TRY TO WALK OR DRIVE IN THESE AREAS.

INTERESTS ALONG THESE CREEKS SHOULD IMMEDIATELY PREPARE TO PROTECT
LIFE AND PROPERTY FROM FLOODING. DUE TO THE SWIFT CURRENTS IN THE
CREEKS. PERSONS SHOULD NOT ENTER OR DRIVE INTO FLOODED AREAS.
REMEMBER...TURN AROUND DONT DROWN. DO NOT DRIVE INTO FLOODED AREAS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN ALSO CALL THE NATIONAL WEATHER
SERVICE IN JACKSONVILLE DIRECTLY AT 800-499-1594 TO REPORT FLOODING.

LAT...LON 3016 8156 3016 8164 3018 8167 3019 8167
      3019 8169 3028 8185 3047 8175 3030 8151

$$

HESS

1 follow-up statement

000 
WGUS72 KJAX 221727
FFSJAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
127 PM EDT FRI AUG 22 2008

FLC031-221734-
/O.EXP.KJAX.FF.W.0002.000000T0000Z-080822T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUVAL FL-
127 PM EDT FRI AUG 22 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 130 PM EDT FOR CENTRAL
DUVAL COUNTY...
...FLOODING WILL CONTINUE...

RADAR INDICATES RAIN CONTINUING ACROSS DUVAL COUNTY...WITH THE
HEAVIEST RAIN SHIFTING TO THE EASTER PART OF THE COUNTY. 
WIDESPREAD FLOODING IS EXPECTED TO CONTINUE...AND AN AREAL FLOOD 
WARNING CONTINUES IN EFFECT FOR DUVAL COUNTY. 

AVOID DRIVING ON FLOODED ROADWAYS. REPORT FLOODING TO THE NEAREST 
LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. 

LAT...LON 3016 8156 3016 8164 3018 8167 3019 8167
      3019 8169 3028 8185 3047 8175 3030 8151

$$

WOLF

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this flash flood warning went out at Aug 22, 10:25 AM EDT, 3 minutes earlier.

Area forecast discussion, Aug 22, 10:25 AM EDT, 3 minutes before

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1025 AM EDT FRI AUG 22 2008

...TROPICAL STORM WARNINGS IN EFFECT FOR THE COASTAL COUNTIES AS WELL
AS PUTNAM AND CLAY COUNTIES...
...WIND ADVISORIES IN EFFECT FOR MOST INLAND COUNTIES...
...FLOOD WATCH IN EFFECT FOR ALL AREAS...

.UPDATE...RAINBANDS CONTINUE TO ROTATE THROUGH THE CWA IN
ASSOCIATION WITH FAY. FAY IS NEAR GILCHRIST COUNTY AT THIS TIME.
SOME OF THE CONVECTIVE CELLS IN THE NE QUADRANT BECOMING STRONGER AT
TIMES. HAVE CONTINUED TO ISSUE FLOOD WARNINGS WHERE THE BANDS SET UP
WITH THE HEAVIEST ONE NOW OVER THE COASTAL AREAS OF NE FL. THIS BAND
TRAILS DOWN INTO ERN MARION COUNTY WHICH SHOULD LIFT GRADUALLY NWD
AS FAY CONTINUES TO DRIFT OFF TOWARD THE W. WILL NEED TO WATCH SOME
OF THE STRONGER CELLS THAT ROTATE GIVEN THE INCREASED HELICITY
VALUES. CURRENT ZONES ARE ON TRACK WITH LITTLE NEEDED TO CHANGE AT
THIS TIME. WILL NEED TO RE-EVALUATE WIND ADVISORIES THIS AFTERNOON
AND POSSIBLY EXTEND THEM INTO THIS EVENING/OVERNIGHT.

&&

.AVIATION...IFR CONDITIONS WILL CONTINUE TODAY AS HEAVY SHOWERS FROM
TS FAY REDUCE VSBYS/CIGS. WINDS GUSTS TO AROUND 50 KNOTS ARE
POSSIBLE IN RAINBANDS.

&&

.MARINE...SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE WATERS
TODAY AS RAINBANDS ON EAST SIDE OF TS FAY MOVE INTO THE COASTAL
WATERS. GETTING PEAK WINDS OF AROUND 55 KT OVER ST JOHNS COUNTY.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  83  73  85  73 / 100  80  60  40
SSI  81  76  83  77 / 100  70  50  30
JAX  82  75  84  76 / 100  80  60  50
SGJ  83  76  84  77 / 100  70  60  40
GNV  83  74  86  73 / 100  90  60  50
OCF  84  74  86  74 / 100  80  60  40

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...FLOOD WATCH THROUGH LATE TONIGHT FOR ALACHUA-BAKER-BRADFORD-CLAY-
     COLUMBIA-DUVAL-FLAGLER-GILCHRIST-HAMILTON-MARION-NASSAU-
     PUTNAM-ST JOHNS-SUWANNEE-UNION.

     TROPICAL STORM WIND WARNING UNTIL 5 AM EDT SATURDAY FOR CLAY-
     DUVAL-FLAGLER-NASSAU-PUTNAM-ST JOHNS.

     TROPICAL STORM WARNING FOR DUVAL-FLAGLER-NASSAU-ST JOHNS.

     WIND ADVISORY UNTIL 8 PM EDT THIS EVENING FOR ALACHUA-COLUMBIA-
     GILCHRIST-HAMILTON-MARION-SUWANNEE.

     WIND ADVISORY UNTIL 4 PM EDT THIS AFTERNOON FOR BAKER-BRADFORD-
     UNION.

GA...FLOOD WATCH THROUGH LATE TONIGHT FOR APPLING-ATKINSON-BACON-
     BRANTLEY-CHARLTON-CLINCH-COASTAL CAMDEN-COASTAL GLYNN-
     COFFEE-ECHOLS-INLAND CAMDEN-INLAND GLYNN-JEFF DAVIS-PIERCE-
     WARE-WAYNE.

     LAKE WIND ADVISORY UNTIL 4 PM EDT THIS AFTERNOON FOR APPLING-
     ATKINSON-BACON-BRANTLEY-CHARLTON-CLINCH-COFFEE-ECHOLS-JEFF
     DAVIS-PIERCE-WARE-WAYNE.

     TROPICAL STORM WIND WARNING UNTIL 5 AM EDT SATURDAY FOR COASTAL
     CAMDEN-COASTAL GLYNN-INLAND CAMDEN-INLAND GLYNN.

     TROPICAL STORM WARNING FOR COASTAL CAMDEN-COASTAL GLYNN.

AM...TROPICAL STORM WARNING FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH
     FL 20 NM TO 60 NM OFFSHORE-ALTAMAHA SOUND GA TO FERNANDINA
     BEACH FL OUT 20 NM-FERNANDINA BEACH TO ST AUGUSTINE FL 20
     NM TO 60 NM OFFSHORE-FERNANDINA BEACH TO ST AUGUSTINE FL
     OUT 20 NM-ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM
     OFFSHORE-ST AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM.

&&

SHASHY/HESS/WOLF/LETRO/KERNS

In the hours before

Local storm report, Aug 22, 9:19 AM EDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
919 AM EDT FRI AUG 22 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0824 AM     TROPICAL STORM   5 NNE ORANGE PARK       30.24N 81.67W
08/22/2008                   DUVAL              FL   ASOS

            JACKSONVILLE NAVAL AIR STATION ASOS MEASURED WIND GUST TO
            51 MPH.

&&

ECZ

Local storm report, Aug 22, 9:43 AM EDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
943 AM EDT FRI AUG 22 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     TROPICAL STORM   4 SE ST. AUGUSTINE      29.86N 81.26W
08/22/2008                   AMZ454             FL   C-MAN STATION

            THE SAUF1 C-MAN STATION REPORTED SUSTAINED SOUTHEAST
            WINDS AT 35 KNOTS WITH A GUST TO 51 KNOTS.

&&

ARS

Local storm report, Aug 22, 9:56 AM EDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
956 AM EDT FRI AUG 22 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     TROPICAL STORM   PALM COAST              29.57N 81.21W
08/22/2008                   FLAGLER            FL   EMERGENCY MNGR

            SPOTTER MEASURED WIND GUST TO 66 MPH IN EASTERN PALM
            COAST.

&&

ECZ

Special weather statement, Aug 22, 9:56 AM EDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
956 AM EDT FRI AUG 22 2008

FLZ025-221445-
DUVAL-
956 AM EDT FRI AUG 22 2008

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR DUVAL COUNTY FOR
STRONG WINDS AND FUNNEL CLOUDS VALID UNTIL 1045 AM EDT...

AT 956 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A BAND OF HEAVY SHOWERS OVER SOUTHEASTERN DUVAL COUNTY AND NORTHERN
ST JOHNS COUNTY...MOVING NORTHWEST AT 40 MPH. RADAR INDICATES SOME
ROTATION WITHIN THIS BAND OF SHOWERS...AND BRIEF FUNNEL CLOUDS ARE
POSSIBLE ALONG WITH STRONG GUSTY WINDS UP TO 60 MPH ASSOCIATED WITH
THIS BAND OF HEAVY SHOWERS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

WOLF

Local storm report, Aug 22, 10:03 AM EDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1003 AM EDT FRI AUG 22 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 AM     NON-TSTM WND DMG NORMANDY                30.31N 81.76W
08/22/2008                   DUVAL              FL   TRAINED SPOTTER

            A TRAINED SKYWARN SPOTTER REPORTED 2 LARGE TREES SNAPPED
            OFF ABOUT 6 FEET ABOVE THE GROUND ALONG FIRESTONE AND
            MORSE ROADS WEST OF INTERSTATE 295.

&&

BKERNS

Local storm report, Aug 22, 10:21 AM EDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1021 AM EDT FRI AUG 22 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1019 AM     HEAVY RAIN       PALM COAST              29.57N 81.21W
08/22/2008  M0.00 INCH       FLAGLER            FL   EMERGENCY MNGR

            THE FLAGLER COUNTY EMERGENCY MANAGER REPORTED THE
            FOLLOWING RAINFALL REPORTS.8.70 INCHES AT THE EOC. 5.05
            INCHES IN NORTHEAST PALM COAST AND 8.45 IN WEST PALM
            COAST.

&&

BKERNS

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 21, 11:15 PM EDT	Flash Flood Warning	JAX	Duval	6 hr
Aug 22, 12:19 AM EDT	Areal Flood Warning	JAX	Baker	6 hr
Aug 22, 1:35 AM EDT	Areal Flood Warning	JAX	Clay, Duval, Nassau, Saint Johns	8 hr
Aug 22, 4:58 AM EDT	Areal Flood Warning	JAX	Baker, Columbia	2 hr
Aug 22, 6:01 AM EDT	Areal Flood Warning	JAX	Columbia	6 hr
Aug 22, 7:07 AM EDT	Areal Flood Warning	JAX	Baker, Columbia, Hamilton, Nassau, Suwannee	3 hr
Aug 22, 9:24 AM EDT	Areal Flood Warning	JAX	Duval, Flagler, Nassau, Saint Johns	6 hr
Aug 22, 9:57 AM EDT	Areal Flood Warning	JAX	Baker, Columbia, Hamilton, Suwannee	6 hr
Aug 22, 11:51 AM EDT	Areal Flood Warning	JAX	Nassau	6 hr
Aug 22, 12:07 PM EDT	Special Marine Warning	JAX		53 min
Aug 22, 12:45 PM EDT	Tornado Warning	JAX	Duval, Nassau	30 min
Aug 22, 12:52 PM EDT	Tornado Warning	JAX	Duval, Saint Johns	38 min
Aug 22, 1:15 PM EDT	Tornado Warning	JAX	Duval, Nassau	45 min
Aug 22, 1:24 PM EDT	Tornado Warning	JAX	Duval, Saint Johns	51 min
Aug 22, 2:10 PM EDT	Tornado Warning	JAX	Duval, Nassau	50 min
Aug 22, 2:11 PM EDT	Tornado Warning	JAX	Duval, Nassau	49 min
Aug 22, 3:18 PM EDT	Areal Flood Warning	JAX	Baker, Duval, Nassau, Saint Johns	4 hr
Aug 22, 4:28 PM EDT	Gale Warning	JAX		12 hr
Aug 22, 5:01 PM EDT	Tornado Warning	JAX	Clay, Flagler, Putnam, Saint Johns	44 min
Aug 22, 5:30 PM EDT	Areal Flood Warning	JAX	Clay, Duval, Flagler, Putnam, Saint Johns	3 hr
Aug 22, 5:44 PM EDT	Tornado Warning	JAX	Clay, Duval, Saint Johns	35 min
Aug 22, 6:36 PM EDT	Areal Flood Warning	JAX	Baker, Columbia, Hamilton, Nassau, Union	4 hr

Nearby

Flash Flood Warnings in Florida, 2008 Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.